If one would to supply salad green to a population of say 200 people, growing in zone 9b, how much land would it take? open to growing aquaponic or hydroponic Thanks for helping.

USDA Hardiness Zone:
Zone 9b: 25F to 30F
PlantMaps Hardiness Zone:
Zone 8b: 15F to 20F
Days Where Temp Exceeds 86°F:
181 - 210 days
Ecoregion:
Freeze Data:
Average First Frost December 1 - 10
Average Last Frost: February 11 - 20
Local Climate Data
Mon Min F Max F Precip In.
Jan 35 59 1.78
Feb 36 59 1.72
Mar 38 63 1.33
Apr 40 68 .37
May 44 74 .24
Jun 50 83 .03
Jul 57 89 .78
Aug 58 89 1.01
Sep 54 85 .87
Oct 45 75 .29
Nov 37 64 .6
Dec 34 59 1.04
Ann 44 72 10.06

Just greens? 2 acres is plenty after accepted bug and rodent loss. Consider edible cover crop weeds, so when you pick weeds, they had value to your mixes. So when you harvest your greens, you dont have to pick out undesirables. I would also highly recommended planting another profitable shade crop to be able to rely on hot temp green production. This is permaculture after all, right? This sounds like a plan that needs some shade crops that go well with greens. Aka intercroping

Any shade crops recommendations? With 10" annual rainfall, I am also looking into aquaponic which claimed to use about half the water.

Well, you can use heat tolerant plants such as really profitable spicey peppers, okra, some tomatoes, some egg plant...and plant your heat tolerant greens in between or under them. Certain spinach, mustard, collards, chard, simpson lettuce, komatsuna. Lets not forget about edibles, beet greens, amaranth leaves, purslane, orach. Lots of possibilities.

These things help too.